Steady-State Vibration Level Measurement of the Five-Phase Induction Machine during Third Harmonic Injection or Open-Phase Faults

Adam Muc (), Marcin Morawiec and Filip Wilczyński
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Adam Muc: Department of Ship Automation, Gdynia Maritime University, Poland Morska St. 83, 81-225 Gdynia, Poland
Marcin Morawiec: Department of Electrical and Control Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-230 Gdańsk, Poland
Filip Wilczyński: Department of Electrical and Control Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-230 Gdańsk, Poland

Energies, 2023, vol. 16, issue 2, 1-16

Abstract: Multiphase electric machines are increasingly used in various industries and for electromobility. Complex systems have been developed for the control and powering of multiphase machines, which require verification. The quality of control and the power supply of electric machines is usually evaluated by analyzing various electrical parameters. On the other hand, taking into account the fact that a motor is an electrical-mechanical object, its full diagnostics should also include the analysis of vibration signals to verify the operation of the motor as a mechanical device. In this paper, a sensorless control algorithm was studied and applied to a 5-phase induction motor. Various scenarios were considered; in particular, the operation of the studied motor in the absence of one or two phases and in the case of the introduction of the third harmonic to increase the torque was analyzed. In the scenarios considered, the motor was connected to another machine and operated with no load as well as with a preset load. The results obtained were analyzed in the time and frequency domain and were related to the standards used.

Keywords: 5-phase motor; sensorless control; vibrodiagnostics; NTD measurements; third harmonic injection; open-phase faults; multiphase electric motor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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